Oil mist interception assembly and extractor hood

Abstract

The utility model relates to oil fume suction equipment technical field provides an oil mist intercepting assembly and range hood, the component includes mounting support, oil mist intercepting disc, intercepting motor, external gear, connecting rod. The component, through setting mounting support and oil mist intercepting disc, the outer ring of oil mist intercepting disc is set into triangular arc and makes the inner gear and outer ring coaxial arrangement, multiple skeleton spoke and multiple intercepting spoke peony garden between the inner gear and outer ring, can improve the strength and the wind of oil mist intercepting disc, prevent deformation, and the central connecting frame is coaxial fixed connection with the inner gear, makes oil mist intercepting disc can revolve around the own axle core, the drive shaft of intercepting motor still drives the whole oil mist intercepting disc around the drive shaft revolution through connecting rod, makes oil mist intercepting disc can form eccentric compound motion, makes the wind area greatly increase, has improved the efficiency of oil fume fluid, need not to increase the power of intercepting motor, can promote the effect and the efficiency of intercepting oil mist, the noise is lower.

Description

Technical Field

[0001] This utility model relates to the technical field of oil fume extraction equipment, specifically to an oil mist interception component and an oil fume extractor. Background Technology

[0002] A range hood, also known as a kitchen exhaust hood, is a kitchen appliance that purifies the kitchen environment by expelling cooking fumes from indoors to outdoors. It typically consists of a smoke collection chamber and a housing. Range hoods are now widely used in kitchens to remove cooking fumes and purify the indoor environment.

[0003] Ideally, oil fume particles would enter the range hood with the air, be intercepted and separated by the filter, impeller, and other components, and flow into the oil cup. However, in actual operation, due to the high viscosity of grease, it easily adheres to the impeller and the inside of the volute after condensation. If not cleaned for a long time, it will form grease and oil film, thereby reducing the performance of the range hood and increasing the probability of oil fume escaping.

[0004] To improve the performance of range hoods and reduce the probability of cooking fumes escaping, rotating oil mist interception discs are commonly used. These discs are installed in the flow channel between the smoke inlet of the smoke collection chamber and the air inlet of the fan. The high-speed rotation of the oil mist interception disc increases the probability of collision with the oil mist. After being intercepted by the disc, the grease particles in the oil mist are thrown to the outer edge under centrifugal force, eventually flowing into the oil cup of the range hood. The remaining fumes are then exhausted outdoors by the fan, thus improving the oil fume separation efficiency of the range hood.

[0005] However, in the relevant oil mist interception technology, the oil mist interception plate is set in the flow channel between the smoke inlet of the smoke collection chamber and the air inlet of the fan, which greatly reduces the air passage area of ​​the flow channel cross section, reduces the efficiency of the oil fume fluid, affects the performance of the range hood and causes excessive noise, and the oil mist interception plate is prone to deformation. Utility Model Content

[0006] To address the aforementioned deficiencies in the prior art, this utility model provides an oil mist interception component and a range hood, which solves at least one of the aforementioned technical deficiencies in the prior art, increases the airflow area, reduces the impact of the oil mist interception component on the performance of the range hood, improves fluid efficiency, avoids excessive noise, and prevents deformation of the oil mist interception disc.

[0007] A second aspect of this utility model also provides a range hood.

[0008] To achieve the objective of this utility model, an oil mist interception component is provided, comprising:

[0009] The mounting bracket forms a receiving cavity and a support frame, wherein the support frame is provided with multiple through holes;

[0010] An oil mist interception disc is disposed in the receiving cavity. The oil mist interception disc includes an outer ring, multiple skeleton spokes, multiple interception spokes, an internal gear, and a central connecting frame.

[0011] The outer ring is triangular in shape, forming the outer contour of the oil mist interception disk. The internal gear is coaxially arranged with the outer ring.

[0012] Each of the skeleton spokes extends from the internal gear to the outer ring, and each intercepting spoke is disposed between adjacent skeleton spokes, with a gap between adjacent intercepting spokes.

[0013] The central connecting frame is fixedly connected to the internal gear on the same axis.

[0014] An intercepting motor has a drive shaft, the intercepting motor is fixed to the support frame, and the drive shaft extends through the support frame into the receiving cavity;

[0015] An external gear is fitted onto the drive shaft, and the external gear meshes with the internal gear, so that when the drive shaft rotates, the oil mist intercepting disc rotates around its own shaft.

[0016] A connecting rod, the first end of which is fixed to the drive shaft, and the second end of which is rotatably connected to the shaft core of the central connecting frame, so that when the drive shaft rotates, the entire oil mist interception disc revolves around the drive shaft.

[0017] Preferably, the mounting bracket is recessed to form a bracket base, a flow guide ring, and a support frame.

[0018] The first side of the flow guide ring is connected to the support base, and the receiving cavity is formed within the flow guide ring.

[0019] The support frame is mounted on the second side of the flow guide ring. The support frame includes a motor bracket and multiple reinforcing ribs. The motor bracket is located at the central axis of the flow guide ring, and each reinforcing rib extends from the motor bracket to the flow guide ring.

[0020] The interceptor motor is fixed to the motor bracket.

[0021] Preferably, the outer ring includes a first arc, a second arc, and a third arc. The first arc intersects with the second arc to form a first vertex, the second arc intersects with the third arc to form a second vertex, and the third arc intersects with the first arc to form a third vertex.

[0022] The motion trajectories of the first vertex, the second vertex, and the third vertex all rotate and come into contact with the receiving cavity.

[0023] Preferably, the first vertex, the second vertex, and the third vertex are all rounded vertices.

[0024] Preferably, the range hood includes a housing, a fan, and a smoke collection box. The smoke collection box has a smoke inlet, the fan has an air inlet and an air outlet, the fan is located in the housing, the smoke inlet is connected to the air inlet, and the oil mist interception component is located between the smoke inlet and the air inlet.

[0025] The mounting bracket is tilted so that the oil mist interception disc is directly opposite the smoke inlet and the air inlet.

[0026] Preferably, the oil mist interception disc further includes an intermediate ring, the diameter of which is larger than the diameter of the internal gear, and the intermediate ring is located between the internal gear and the outer ring.

[0027] The intercepting spokes include a plurality of first intercepting spokes and a plurality of second intercepting spokes, each first intercepting spoke extending from the inner gear to the intermediate ring, and each second intercepting spoke extending from the intermediate ring to the outer ring.

[0028] The distribution density of the second interceptor spokes is greater than that of the first interceptor spokes.

[0029] Preferably, each of the skeleton spokes is evenly distributed in a circular array centered on the axis of the outer ring.

[0030] The width of each skeleton spoke is greater than the width of each interceptor spoke.

[0031] Preferably, the cross-section of each skeleton spoke is triangular.

[0032] Preferably, the side of the support base is provided with a folded edge.

[0033] The connection between the flow guide ring and the support base is provided with a chamfered ring.

[0034] The second aspect of this utility model provides a range hood, including the aforementioned oil mist interception component and a range hood body.

[0035] The oil mist interception component is located on the main body of the range hood.

[0036] The beneficial effects of this utility model are as follows: The oil mist interception component provided by this utility model, by setting a mounting bracket with a receiving cavity and a support frame, and an oil mist interception disc with an outer ring, multiple skeleton spokes, multiple interception spokes, an internal gear, and a central connecting frame; setting the outer ring in a triangular arc shape and coaxially setting the internal gear with the outer ring, and the multiple skeleton spokes and multiple interception spokes arranged in a peony pattern between the internal gear and the outer ring, can improve the strength and durability of the oil mist interception disc and prevent deformation; moreover, the central connecting frame is coaxially and fixedly connected to the internal gear, intercepting electric current... The machine is fixed to the support frame. The drive shaft of the intercepting motor drives the internal gear of the oil mist intercepting disc to rotate through the external gear, so that the oil mist intercepting disc can rotate around its own axis. The drive shaft of the intercepting motor also drives the entire oil mist intercepting disc to revolve around the drive shaft through the connecting rod. This allows the oil mist intercepting disc to form an eccentric compound motion, which greatly increases the air passage area of ​​the flow channel between the smoke inlet of the smoke collection chamber and the air inlet of the fan, improving the efficiency of the oil fume fluid. It can improve the effect and efficiency of oil mist interception without increasing the power of the intercepting motor, and the noise is lower.

[0037] The range hood provided by this utility model, by including the aforementioned oil mist interception component, inevitably possesses all the advantages of that component. Specifically, this range hood also enables the oil mist interception disc to form an eccentric compound motion, significantly increasing the cross-sectional area of ​​the flow channel between the smoke collection chamber's intake and the fan's inlet, thereby improving the efficiency of the oil mist fluid. It enhances the effectiveness and efficiency of oil mist interception without increasing the power of the interception motor, while also reducing noise. Attached Figure Description

[0038] The above and other objects, features, and advantages of this utility model will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this application.

[0039] Figure 1 An exploded view of the overall structure of the oil mist interception component provided in an embodiment of this utility model;

[0040] Figure 2 One of the schematic diagrams of the overall structure of the oil mist interception component provided in the embodiment of this utility model;

[0041] Figure 3 A second schematic diagram of the overall structure of the oil mist interception component provided for an embodiment of this utility model;

[0042] Figure 4 A schematic diagram of the mounting bracket in the oil mist interception assembly provided in an embodiment of this utility model;

[0043] Figure 5A schematic diagram of the structure of the oil mist interception disk in the oil mist interception assembly provided in the embodiment of this utility model;

[0044] Figure 6 A schematic diagram of the cross-sectional structure of the skeleton spokes and the interception spokes in the oil mist interception assembly provided in the embodiments of this utility model;

[0045] Figure 7 A schematic diagram of the movement of the oil mist interception component provided in an embodiment of this utility model;

[0046] Figure 8 A schematic diagram of the overall structure of the oil mist interception component installed on the range hood body, as provided in an embodiment of this utility model;

[0047] Figure 9 for Figure 8 A schematic diagram of its breakdown.

[0048] 1. Housing; 2. Fan; 21. Air inlet; 22. Air outlet; 3. Smoke collection chamber; 31. Smoke inlet; 4. Oil cup; 5. Oil filter; 6. Smoke collection box;

[0049] 100. Mounting bracket; 110. Receiving cavity; 120. Support frame; 121. Motor bracket; 122. Reinforcing rib; 123. Flanged edge; 130. Through hole; 140. Bracket base; 141. Folded edge; 142. Circular chamfer; 150. Guide ring;

[0050] 200. Oil mist interception disk; 201. First vertex; 202. Second vertex; 203. Third vertex;

[0051] 210. Outer ring; 211. First arc; 212. Second arc; 213. Third arc;

[0052] 220. Skeleton spokes;

[0053] 230. Intercepting spoke; 231. First intercepting spoke; 232. Second intercepting spoke;

[0054] 240. Internal gear; 250. Central connecting frame; 251. Rotary fixing hole; 260. Intermediate ring;

[0055] 300. Interception motor; 310. Drive shaft;

[0056] 400. External gear; 410. First locking nut;

[0057] 500, connecting rod; 510, first connecting rod; 520, second connecting rod; 530, second locking nut; 540, bearing; 550, third locking nut. Detailed Implementation

[0058] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0059] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this applies. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0061] The following is combined Figures 1 to 9 The embodiments of this utility model will be described below. It should be understood that the following description is merely an illustrative embodiment of this utility model and does not constitute any limitation on this utility model.

[0062] Combination Figures 1 to 9 This utility model provides an oil mist interception component, which is installed on the body of a range hood. The range hood includes a housing 1, a fan 2, a smoke collection chamber 3, an oil cup 4, and a smoke collection box 6. The smoke collection box 6 is provided with a smoke collection chamber 3 and a smoke inlet 31, and an oil filter 5 is provided at the smoke inlet 31. The fan 2 has an air inlet 21 and an air outlet 22, and the fan 2 is installed inside the housing 1. The smoke inlet 31 is connected to the air inlet 21. The oil mist interception component is installed between the smoke inlet 31 and the air inlet 21. After the oil fumes are collected by the smoke collection box 6, they can enter the oil mist interception component from the smoke inlet 31. After the oil mist is intercepted by the oil mist interception component, the fumes enter the fan 2 from the air inlet 21 and are finally discharged to the outside through the air outlet 22 of the fan 2.

[0063] The oil mist interception assembly provided in the embodiments of this utility model includes a mounting bracket 100, an oil mist interception disc 200, an interception motor 300, an external gear 400, and a connecting rod 500.

[0064] The mounting bracket 100 has a receiving cavity 110 and a support frame 120. The support frame 120 is provided with multiple through holes 130, through which oil fumes can pass.

[0065] The oil mist interception disc 200 is disposed in the receiving cavity 110. The oil mist interception disc 200 includes an outer ring 210, multiple skeleton spokes 220, multiple interception spokes 230, an internal gear 240, and a central connecting frame 250.

[0066] The outer ring 210 is triangular arc-shaped, forming the outer contour of the oil mist interception disk 200. The inner gear 240 is located inside the outer ring 210 and is coaxial with the outer ring 210, that is, the diameter of the inner gear 240 is smaller than that of the outer ring 210.

[0067] Each skeleton spoke 220 extends from the inner gear 240 to the outer ring 210. Each intercepting spoke 230 is disposed between adjacent skeleton spokes 220, and a gap is provided between adjacent intercepting spokes 230 to allow oil fumes entering the oil mist interception assembly to pass through the gaps formed between each intercepting spoke 230. The arrangement of multiple skeleton spokes 220 and multiple intercepting spokes 230 on the oil mist interception disc 200 improves strength and prevents deformation.

[0068] The central connecting frame 250 is coaxially and fixedly connected to the internal gear 240. That is, the central connecting frame 250 is located at the geometric center of the entire oil mist interception disk 200, which facilitates connection with other components in the assembly.

[0069] The interceptor motor 300 has a drive shaft 310. The interceptor motor 300 is fixed on the support frame 120, and the drive shaft 310 passes through the support frame 120 and extends into the receiving cavity 110.

[0070] The external gear 400 is sleeved on the drive shaft 310. The external gear 400 is sleeved on the drive shaft 310 from the receiving cavity 110, and can be locked with the first locking nut 410, so that the external gear 400 can rotate synchronously with the drive shaft 310. The external gear 400 meshes with the internal gear 240, so that when the drive shaft 310 rotates, the oil mist interception disk 200 can rotate around its own axis.

[0071] The first end of the connecting rod 500 is fixed to the drive shaft 310, and the connecting rod 500 can rotate synchronously with the drive shaft 310. The second end of the connecting rod 500 is rotatably connected to the shaft core of the central connecting frame 250, that is, the second end of the connecting rod 500 is rotatably connected to the geometric center of the entire oil mist interception disk 200. For example, the connecting rod 500 includes a first connecting rod 510 and a second connecting rod 520. The second end of the first connecting rod 510 and the first end of the second connecting rod 520 are perpendicularly connected to each other. The first end of the first connecting rod 510 is sleeved on the drive shaft 310 through a connecting hole, and the first connecting rod 510 is fixed to the drive shaft using a second locking nut 530. A rotating fixing hole 251 is provided at the shaft core of the central connecting frame 250, and a bearing 540 is provided at the rotating fixing hole 251. The second end of the second connecting rod 520 passes through the inner ring of the bearing 540, and the inner ring of the bearing 540 is locked to the second end of the second connecting rod 520 using a third locking nut 550. When the drive shaft 310 rotates, the entire oil mist interception disk 200 can revolve around the drive shaft 310.

[0072] When the drive shaft 310 of the intercepting motor 300 rotates, the oil mist intercepting disk 200 can rotate around its own axis, and the entire oil mist intercepting disk 200 can also revolve around the drive shaft 310, forming an eccentric compound motion, which greatly increases the air passage area of ​​the flow channel cross section and improves the efficiency of the oil fume fluid. Without increasing the power of the intercepting motor 300, the effect and efficiency of intercepting oil mist can be improved, and the noise is lower.

[0073] The gear ratio of the external gear 400 to the internal gear 240 can be 1:3, meaning the speed ratio of the external gear 400 to the internal gear 240 is 3:1. The connecting rod 500 drives the entire oil mist interception disc 200 to revolve around the drive shaft 310, while the external gear 400 drives the oil mist interception disc 200 to rotate, creating an eccentric compound motion. The speed ratio of the revolution to the rotation is 3:1. During operation, the eccentric compound motion of the oil mist interception disc 200 covers the flow section of the receiving cavity 110, intercepting grease particles in the flue gas passing through the oil mist interception disc 200. Furthermore, the interception motor 300 can be controlled independently, matching the optimal oil mist interception speed according to the concentration of oil fumes and the speed setting of the fan 2, achieving a balance between interception efficiency and air performance loss.

[0074] It is understood that the oil mist interception assembly provided in the embodiments of this utility model, by setting up a mounting bracket 100 with a receiving cavity 110 and a support frame 120, and an oil mist interception disc 200 with an outer ring 210, multiple skeleton spokes 220, multiple interception spokes 230, an internal gear 240 and a central connecting frame 250; setting the outer ring 210 into a triangular arc shape and coaxially setting the internal gear 240 with the outer ring 210, and the multiple skeleton spokes 220 and multiple interception spokes 230 arranged in a circle between the internal gear 240 and the outer ring 210, can improve the strength and appearance of the oil mist interception disc 200 and prevent deformation; moreover, the central connecting frame 250 is coaxially and fixedly connected to the internal gear 240. The intercepting motor 300 is fixed to the support frame 120. The drive shaft 310 of the intercepting motor 300 drives the internal gear 240 of the oil mist intercepting disk 200 to rotate through the external gear 400, so that the oil mist intercepting disk 200 can rotate around its own axis. The drive shaft 310 of the intercepting motor 300 also drives the entire oil mist intercepting disk 200 to revolve around the drive shaft 310 through the connecting rod 500. This allows the oil mist intercepting disk 200 to form an eccentric compound motion, which greatly increases the air passage area of ​​the flow channel section between the smoke inlet 31 of the smoke collection chamber 3 and the air inlet 21 of the fan 2, improving the efficiency of the oil fume fluid. Without increasing the power of the intercepting motor 300, the effect and efficiency of intercepting oil mist can be improved, and the noise is lower.

[0075] It should be noted that users can select the appropriate speed setting to start the motor of fan 2 and the intercepting motor 300 according to the concentration of cooking fumes. This drives the impeller of fan 2 to rotate and the oil mist intercepting disc 200 to perform an eccentric compound motion. Under the suction of fan 2, cooking fumes from outside the range hood enter the fume collection chamber 3, where a small portion of the grease is initially intercepted by the oil filter 5. Immediately afterward, as the fumes pass through the oil mist intercepting component, the high-speed rotating oil mist intercepting disc 200 cuts through the fumes, intercepting the vast majority of the grease. This prevents a large amount of grease from entering fan 2 and contaminating its impeller and casing, thus protecting the cleanliness and output performance of the downstream fan 2.

[0076] Furthermore, the outer ring 210 of the oil mist interception disc 200 is designed as a triangular arc shape. The drive shaft 310 and the oil mist interception disc 200 are mounted on different axes via a connecting rod 500. Combined with the meshing connection of the external gear 400 and the internal gear 240, the oil mist interception disc 200 can perform eccentric compound motion, i.e., cycloidal motion. The curve created by the cycloidal motion of the oil mist interception disc 200 is elliptical. This significantly increases the airflow area, reduces the impact of the oil mist interception component on the overall performance of the range hood, improves fluid efficiency, and balances interception efficiency, air performance, and noise reduction.

[0077] For example, in a current range hood housing with a width of 420mm and a depth of 310mm, the maximum airflow area of ​​existing oil mist interception components is only a circle with a diameter of 290mm, which is a 47% reduction in airflow area compared to not installing an interception component. However, the elliptical airflow cross-section formed by the oil mist interception component provided in the embodiments of this utility model reduces the airflow area by only 27% compared to not installing an interception module.

[0078] Specifically, in combination Figures 2 to 4 In some embodiments of this utility model, the mounting bracket 100 is recessed to form a bracket base 140, a guide ring 150, and a support frame 120.

[0079] The first side of the guide ring 150 is connected to the support base 140, and the receiving cavity 110 is formed inside the guide ring 150.

[0080] A support frame 120 is disposed on the second side of the guide ring 150. The support frame 120 includes a motor bracket 121 and multiple reinforcing ribs 122. The motor bracket 121 is located at the central axis of the guide ring 150, that is, the geometric central axis of the motor bracket 121 coincides with the geometric central axis of the guide ring 150. Each reinforcing rib 122 extends from the motor bracket 121 to the guide ring 150. This makes the structure of the support frame 120 more robust, supporting the weight of the intercepting motor 300 and ensuring the stability of the intercepting motor 300 and the oil mist intercepting disk 200. Upward-curved flanges 123 are also provided on both sides of the reinforcing ribs 122, which not only enhance rigidity but also reduce flow resistance and guide airflow.

[0081] The interceptor motor 300 is fixed on the motor bracket 121; for example, the mounting holes on the interceptor motor 300 correspond one-to-one with the screw holes on the motor bracket 121, and the motor is fixed and connected with screws, which facilitates the installation and removal of the interceptor motor 300.

[0082] Combination Figure 5 In some embodiments of this utility model, the outer ring 210 includes a first arc 211, a second arc 212, and a third arc 213. The first arc 211 intersects with the second arc 212 to form a first vertex 201, the second arc 212 intersects with the third arc 213 to form a second vertex 202, and the third arc 213 intersects with the first arc 211 to form a third vertex 203.

[0083] The oil mist interception disk 200 rotates around its own axis and revolves around the drive shaft 310, forming a cycloidal motion, so that the motion trajectories of the first vertex 201, the second vertex 202 and the third vertex 203 are elliptical.

[0084] The movement trajectories of the first vertex 201, the second vertex 202, and the third vertex 203 all rotate and come into contact with the receiving cavity 110. In other words, the movement trajectories of the first vertex 201, the second vertex 202, and the third vertex 203 form the basic profile of the guide ring 150. When the oil mist interception disk 200 rotates and oscillates, the oil mist cannot escape from the gaps between the first vertex 201, the second vertex 202, and the third vertex 203 and the receiving cavity 110, thereby improving the interception effect. The guide ring 150 can be formed by stretching and pressing according to the basic profile, with a tapered structure, wider at the bottom and narrower at the top, which not only guides airflow but also facilitates manufacturing.

[0085] The oil mist interception disc 200 is installed inside the receiving cavity 110 of the guide ring 150 of the mounting bracket 100. Oil fumes are first collected by the guide ring 150 and then pass through the oil mist interception disc 200, ensuring that most of the oil fumes passing through the guide ring 150 are intercepted by the oil mist interception disc 200, which traps grease particles. Furthermore, the intercepted grease is thrown into the inner wall of the receiving cavity 110 of the guide ring 150 and can be tilted and guided by the mounting bracket 100 to drip down to the back of the range hood, preventing oil droplets from splashing outside the range hood and affecting the user experience.

[0086] Furthermore, combined Figure 5 In some embodiments of this utility model, the first vertex 201, the second vertex 202, and the third vertex 203 are all rounded vertices. The rounded corners can prevent the oil mist interception disk 200 from scraping the inner wall of the receiving cavity 110 in the guide ring 150 when it rotates due to manufacturing or assembly deviations, thereby reducing wear and increasing service life.

[0087] It should be noted that when the oil mist intercepting disk 200 performs eccentric compound motion, the ratio of its rotational speed to its revolution speed is 1:3. The specific equation for the profile of the eccentric compound motion is as follows:

[0088]

[0089] Where e is the eccentricity, which is equivalent to the distance between the connection point of the connecting rod 500 and the drive shaft 310 and the connection point of the connecting rod 500 and the central connecting frame 250 in this embodiment, that is, the distance between the drive shaft 310 and the central axis of the oil mist interception disk 200; and R is the creation radius, which is equivalent to the distance from the central axis of the oil mist interception disk 200 to the first vertex 201, the second vertex 202 and the third vertex 203 in this embodiment; α is the angle of rotation, which is equivalent to the angle of rotation of the connecting rod 500 in this embodiment.

[0090] The basic profile of the guide ring 150 is designed with an eccentricity e of 24.5mm and a creation radius R of 163.8mm within the range of manufacturability. The air passage area can reach 73% of that without the interception component, which not only meets the requirements for grease particle interception efficiency, but also effectively reduces the impact of the interception component on the overall air performance of the machine.

[0091] The outer ring 210 of the oil mist interception disc 200 is based on an equilateral triangle with the first vertex 201, the second vertex 202 and the third vertex 203 on the basic profile of the guide ring 150, centered on the axis of the connecting rod 500. The three sides of the triangle are replaced by arcs that fit the basic profile of the guide ring 150, forming the outer ring 210 with arc sides.

[0092] Combination Figure 7 α represents the angle through which the drive shaft 310 rotates, which is also the angle through which the connecting rod 500 and the external gear 400 rotate, while β represents the angle through which the oil mist interception disk 200 rotates. It can be seen that the drive shaft 310 drives the connecting rod 500 to rotate synchronously, thereby driving the oil mist interception disk 200 to revolve around the drive shaft 310. Simultaneously, the drive shaft 310 drives the external gear 400 to rotate synchronously, and the external gear 400 meshes with the internal gear 240 to rotate. Since the gear ratio between the external gear 400 and the internal gear 240 is 1:3, the angle through which the oil mist interception disk 200 rotates around the drive shaft 310 is three times the angle through which the oil mist interception disk 200 rotates around its own central axis. That is, for every three rotations of the drive shaft 310, the oil mist interception disk 200 rotates once, which constitutes one complete cycle.

[0093] Combination Figure 8 and Figure 9 In some embodiments of this utility model, the mounting bracket 100 is tilted so that the oil mist interception plate 200 is directly opposite the smoke inlet 31 of the smoke collection box 6 and the air inlet 21 of the fan 2.

[0094] By tilting the mounting bracket 100, the guide ring 150 can also be tilted. This not only ensures that the inlet of the guide ring 150 is aligned with the smoke inlet 31 of the smoke collection box 6, and the outlet of the guide ring 150 is aligned with the air inlet 21 of the fan 2, resulting in a smoother air intake path and reduced smoke flow resistance, but also allows the guide ring 150 to have a larger air intake area compared to a horizontal placement, further reducing the impact of the oil mist interception component on the overall performance of the machine.

[0095] Furthermore, the inclined setting of the mounting bracket 100 can guide the oil on the mounting bracket 100 to the back of the range hood under the action of gravity, and finally collect it in the oil cup 4.

[0096] In addition, the tilt angle should be less than 30° to prevent the oil mist interception component from occupying too much space in the vertical direction, and to avoid excessively large vertical dimensions of the general-purpose or housing components.

[0097] Combination Figure 5 In some embodiments of this utility model, the oil mist interception disk 200 is further provided with an intermediate ring 260, which is coaxially arranged with the outer ring 210. The diameter of the intermediate ring 260 is larger than the diameter of the internal gear 240, and the intermediate ring 260 is located between the internal gear 240 and the outer ring 210.

[0098] The intercepting spokes 230 include a plurality of first intercepting spokes 231 and a plurality of second intercepting spokes 232, each first intercepting spoke 231 extending from the inner gear 240 to the intermediate ring 260, and each second intercepting spoke 232 extending from the intermediate ring 260 to the outer ring 210.

[0099] The distribution density of the second intercepting spoke 232 is greater than that of the first intercepting spoke 231.

[0100] In other words, the number of intercepting spokes 230 increases gradually from the inner gear 240 to the outer ring 210. The distribution angle of the intercepting spokes 230 near the outer ring 210 is smaller, while the distribution angle of the intercepting spokes 230 near the inner gear 240 is larger. This makes the ratio of the interception area to the ventilation area of ​​the outer ring 210 and the middle ring 260, and the middle ring 260 and the inner gear 240, closer. The interception capacity and pressure drop are also closer, thus achieving a balance between oil fume separation efficiency and pressure drop.

[0101] It should be noted that the oil mist interception disc 200 divides the interception area from the inner gear 240 to the outer ring 210 into multiple levels of concentric rings via the intermediate ring 260. Interception spokes 230 are distributed within each level of the concentric rings, with the number of spokes 230 increasing gradually from the inside out. The closer the ring is to the outer ring 210, the smaller the angle between the spokes and the greater their number. This ensures that the ratio of the interception area to the ventilation area is not significantly different, making the grease interception capacity more closely approximate the pressure drop.

[0102] Combination Figure 1 and Figure 5 In some embodiments of this utility model, each skeleton spoke 220 is evenly distributed in a circular array centered on the core of the outer ring 210.

[0103] The width of each skeleton spoke 220 is greater than the width of each intercept spoke 230.

[0104] The skeleton spokes 220 are wide and thick, but few in number, primarily to provide higher rigidity for the oil mist interception disc 200, reducing the risk of its swaying and deformation. The interception spokes 230 are narrow and thick, but densely arranged, resulting in higher interception efficiency and lower weight.

[0105] The combination of the skeleton spokes 220 and the interception spokes 230 ensures both the oil mist interception disk 200's ability to intercept oil fumes and its rigidity, while the weight increase is not significant compared to that of a disk made from thin sheet metal.

[0106] Of course, both the skeleton spokes 220 and the intercepting spokes 230 can be set as smooth arc-shaped curves. The skeleton spokes 220 extend from the inner gear 240 to the outer ring 210, while the intercepting spokes 230 are distributed in the area between the inner gear 240 and the outer ring 210. The convex direction of the smooth arc-shaped curves in the skeleton spokes 220 and the intercepting spokes 230 is the rotation direction of the oil mist intercepting disk 200. During operation, the forward-convex arc-shaped spokes of the oil mist intercepting disk 200 can reduce rotational resistance and also allow the grease particles intercepted by the spokes to flow along the arc-shaped spokes to the outer ring 210 under centrifugal force, and be thrown onto the inner wall of the receiving cavity 110 of the guide ring 150, thus preventing grease from scaling on the oil mist intercepting disk 200.

[0107] Combination Figure 5 Because the width and thickness of the skeleton spokes 220 are relatively large, the resistance to the passage and rotation of flue gas is relatively large during operation. In some embodiments of this utility model, the cross-section of each skeleton spoke 220 can be set to a triangular shape, and the lower end of the skeleton spoke 220 can be set as a triangular air guide structure to guide the airflow through both sides of the skeleton spoke 220; this helps to reduce the resistance of flue gas passing through the skeleton spokes 220 and the resistance to driving its rotation.

[0108] Combination Figure 4 In some embodiments of this utility model, the side of the support base 140 is provided with a folded edge 141. The folded edge 141 is provided with screw holes, which can be detachably installed on the housing 1 and the smoke collection box 6 by screws, which is convenient for disassembly and installation, and easy for maintenance.

[0109] A chamfered ring 142 is provided at the connection between the guide ring 150 and the support base 140. The chamfered ring 142 can make the guide ring 150 and the support base 140 form an arc transition connection, which can better guide the flue gas through the oil mist interception plate 200 and reach the fan 2.

[0110] Combination Figures 1 to 9 In an embodiment of this utility model, a range hood is also provided, which includes the aforementioned oil mist interception component and the range hood body.

[0111] The oil mist interception component is installed on the main body of the range hood.

[0112] The range hood includes a housing 1, a fan 2, a smoke collection chamber 3, an oil cup 4, and a smoke collection box 6. The smoke collection box 6 has a smoke collection chamber 3 and a smoke inlet 31, with an oil filter 5 installed at the smoke inlet 31. The fan 2 has an air inlet 21 and an air outlet 22, and is housed inside the housing 1. The smoke inlet 31 connects to the air inlet 21. An oil mist interception component is installed between the smoke inlet 31 and the air inlet 21. After the oil fumes are collected by the smoke collection box 6, they can enter the oil mist interception component from the smoke inlet 31. After the oil mist is intercepted by the oil mist interception component, the fumes then enter the fan 2 from the air inlet 21 and are finally discharged to the outside through the air outlet 22 of the fan 2.

[0113] The oil mist interception component is placed at an angle, higher at the front and lower at the back, which is more directly aligned with the smoke inlet 31 on the smoke collection box 6 compared to a horizontal placement. Screw holes are provided on the folded edges 141 around the perimeter for detachable installation between the housing 1 and the smoke collection box 6. One side of the guide ring 150 faces the housing 1, while the other side faces the smoke inlet 31 of the smoke collection box 6, ensuring that most of the flue gas entering the fan 2 must first pass through this oil mist interception component, protecting the performance of the fan 2. The fan 2 is fixedly installed inside the housing 1, with its outlet 22 directly facing the square exhaust port at the top of the housing 1. The oil filter 5 is detachably installed over the smoke inlet 31 of the smoke collection box 6. The oil cup 4 is inserted into the locking structure at the bottom of the smoke collection box 6, and the upper end of the smoke collection box 6 is connected and fixed to the lower end of the housing 1.

[0114] It is understandable that the range hood provided by this utility model, since it includes the aforementioned oil mist interception component, inevitably possesses all the advantages of that component. That is, the range hood can also enable the oil mist interception disc 200 to form an eccentric compound motion, greatly increasing the airflow area of ​​the flow channel cross-section between the smoke inlet 31 of the smoke collection chamber 3 and the air inlet 21 of the fan 2, thus improving the efficiency of the oil fume fluid. Without increasing the power of the interception motor 300, it can improve the effect and efficiency of oil mist interception, and also reduces noise.

[0115] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0116] In the description of this specification, the use of terms such as "preferred embodiment," "another embodiment," "some embodiments," "other embodiments," or "specific example," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0117] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An oil mist interception component, disposed in a range hood, characterized in that, The oil mist interception component includes: The mounting bracket forms a receiving cavity and a support frame, wherein the support frame is provided with multiple through holes; An oil mist interception disc is disposed in the receiving cavity. The oil mist interception disc includes an outer ring, multiple skeleton spokes, multiple interception spokes, an internal gear, and a central connecting frame. The outer ring is triangular in shape, forming the outer contour of the oil mist interception disk. The internal gear is coaxially arranged with the outer ring. Each of the skeleton spokes extends from the internal gear to the outer ring, and each intercepting spoke is disposed between adjacent skeleton spokes, with a gap between adjacent intercepting spokes. The central connecting frame is fixedly connected to the internal gear on the same axis. An intercepting motor has a drive shaft, the intercepting motor is fixed to the support frame, and the drive shaft extends through the support frame into the receiving cavity; An external gear is fitted onto the drive shaft, and the external gear meshes with the internal gear, so that when the drive shaft rotates, the oil mist intercepting disc rotates around its own shaft. A connecting rod, the first end of which is fixed to the drive shaft, and the second end of which is rotatably connected to the shaft core of the central connecting frame, so that when the drive shaft rotates, the entire oil mist interception disc revolves around the drive shaft.

2. The oil mist interception component as described in claim 1, characterized in that, The mounting bracket is recessed to form a bracket base, a flow guide ring, and a support frame. The first side of the flow guide ring is connected to the support base, and the receiving cavity is formed within the flow guide ring. The support frame is mounted on the second side of the flow guide ring. The support frame includes a motor bracket and multiple reinforcing ribs. The motor bracket is located at the central axis of the flow guide ring, and each reinforcing rib extends from the motor bracket to the flow guide ring. The interceptor motor is fixed to the motor bracket.

3. The oil mist interception component as described in claim 2, characterized in that, The outer ring includes a first arc, a second arc, and a third arc. The first arc intersects with the second arc to form a first vertex, the second arc intersects with the third arc to form a second vertex, and the third arc intersects with the first arc to form a third vertex. The motion trajectories of the first vertex, the second vertex, and the third vertex all rotate and come into contact with the receiving cavity.

4. The oil mist interception component as described in claim 3, characterized in that, The first vertex, the second vertex, and the third vertex are all rounded vertices.

5. The oil mist interception component as described in claim 1, characterized in that, The range hood includes a housing, a fan, and a smoke collection box. The smoke collection box has a smoke inlet, and the fan has an air inlet and an air outlet. The fan is located in the housing, and the smoke inlet is connected to the air inlet. The oil mist interception component is located between the smoke inlet and the air inlet. The mounting bracket is tilted so that the oil mist interception disc is directly opposite the smoke inlet and the air inlet.

6. The oil mist interception component as described in claim 1, characterized in that, The oil mist interception disc also includes an intermediate ring, the diameter of which is larger than the diameter of the internal gear, and the intermediate ring is located between the internal gear and the outer ring. The intercepting spokes include a plurality of first intercepting spokes and a plurality of second intercepting spokes, each first intercepting spoke extending from the inner gear to the intermediate ring, and each second intercepting spoke extending from the intermediate ring to the outer ring. The distribution density of the second interceptor spokes is greater than that of the first interceptor spokes.

7. The oil mist interception component as described in claim 6, characterized in that, Each of the skeleton spokes is evenly distributed in a circular array centered on the axis of the outer ring. The width of each skeleton spoke is greater than the width of each interceptor spoke.

8. The oil mist interception component as described in claim 7, characterized in that, Each spoke of the skeleton has a triangular cross-section.

9. The oil mist interception component as described in claim 2, characterized in that, The support base has a folded edge on its side. The connection between the flow guide ring and the support base is provided with a chamfered ring.

10. A range hood, characterized in that, Includes the oil mist interception component and the range hood body as described in any one of claims 1 to 9. The oil mist interception component is located on the main body of the range hood.

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